Love or Money?

This book is a detective story. 

The Clarkson family was rich and had a big house with a beautiful garden. Mrs. Clarkson was rich and lived the house. Therefore, their son and daughter, their relatives, and other people wanted to ask backing and transmit the garden. However, Mrs. Clarkson didn’t do them. One day, Mrs. Clarkson was died and she was killed by someone. 

Who is the killer? I surprised the killer and the motive for the crime. I read the climax, so I understand the meaning of the title. It’s exciting story, so I want you to read it!